. >>> well members of congress are asking why the fbi waited until last friday to tell them about the affair that cost cia director david petraeus his job. it was harassing e-mails that first put the fbi on the case and led to the information. >> many are asking why they didn't know the fbi was investigating david petraeus until the cia director resigned. >> we received no advanced notice. it was like a lightning bolt. >> reporter: fbi officials say they did not alert lawmakers or the white house because they weren't turning up evidence of a crime or security breach. but richard meyers told -- told cbs this morning, notifying superiors is common. >> we file investigations in the military where the allegations were not proven yet but the chain of command was made aware that somebody was being looked at for whatever. >> reporter: before the scandal, petraeus was scheduled to testify this week on capitol hill about the deadly attack on the u.s. console at in benghazi, libya. acting director mike morrell will testify instead. some lawmakers say they still need to hear from petraeus. >> fr